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B53383

Sigma-Aldrich

Bis(tributyltin) oxide

96%

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Synonym(s):
Bis[tri-n-butyltin(IV)]oxide, HBD, Hexabutyldistannoxane, TBTO, Tributyltin(IV) oxide
Linear Formula:
(CH3CH2CH2CH2)3SnOSn(CH2CH2CH2CH3)3
CAS Number:
56-35-9
Molecular Weight:
596.10
Beilstein:
745057
EC Number:
200-268-0
MDL number:
MFCD00009418
UNSPSC Code:
12352103
PubChem Substance ID:
24891834
NACRES:
NA.22

vapor pressure

<0.01 mmHg ( 25 °C)

Assay

96%

form

liquid

refractive index

n20/D 1.486 (lit.)

bp

180 °C/2 mmHg (lit.)

density

1.17 g/mL at 25 °C (lit.)

SMILES string

CCCC[Sn](CCCC)(CCCC)O[Sn](CCCC)(CCCC)CCCC

InChI

1S/6C4H9.O.2Sn/c6*1-3-4-2;;;/h6*1,3-4H2,2H3;;;

InChI key

APQHKWPGGHMYKJ-UHFFFAOYSA-N

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Application

Employed in the synthesis of α,β-unsaturated methyl ketones, isoxazoles, fungicides, and bactericides.

Signal Word

Danger

Hazard Classifications

Acute Tox. 3 Dermal - Acute Tox. 3 Inhalation - Acute Tox. 3 Oral - Aquatic Acute 1 - Aquatic Chronic 1 - Eye Irrit. 2 - Repr. 1B - Skin Irrit. 2 - STOT RE 1

WGK

WGK 3

Flash Point(F)

closed cup

Flash Point(C)

closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Information

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Chemistry Letters (Jpn), 1219-1219 (1993)
Journal of the Chemical Society. Perkin Transactions 1, 413-413 (1994)
Applied Organometallic Chemistry, 8, 37-37 (1994)
J. Polym. Mater., 9, 297-297 (1992)
Naomasa Kobayashi et al.
Marine pollution bulletin, 44(8), 748-751 (2002-09-25)
Tributyltin oxide (TBTO) has been used worldwide in marine antifouling paints as a biocide for some time. However, it produced toxic effects, especially in marine water/sediment ecosystems. Consequently, its use in antifouling paints has been prohibited in many countries. In
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